For now, the important thing is that FC5 is in a state that everything
builds, and is ready for final release. Minor trivia like this is not
mission critical to the release of the OS.
Feel free to submit a patch to X.Org to do this, so it is fixed in
the future.

Actually, it's more important that things are in a state where upgrading
works sanely. Changing from noarch -> arch-specific -> noarch typically
breaks upgrading.

That was the case in the past, when the tools did not support the
architecture changing with the package name staying the same. My
understanding is that yum has supported this for a long time now,
and that up2date and other tools also support it. I've certainly
had no upgrade problems while testing any arch -> noarch -> arch
updates anyway, and haven't had any bug reports.
--
Mike A. Harris * Open Source Advocate * http://mharris.ca
Proud Canadian.